A community health care worker is explaining to a group of factory workers the importance of wearing gloves when working with strong chemicals such as turpentine and paint thinner
Which of the following characteristics of cell membranes underlies the nurse's teaching?
A)
Cell membranes are impermeable to all but lipid-soluble substances.
B)
Cell membranes have a hydrophilic head and a hydrophobic tail.
C)
Cell membranes contain receptors for hormones and biologically active substances.
D)
Transmembrane proteins can pass through the cell membrane into the intracellular environment.
Ans:
A
Feedback:
Because cell membranes are soluble to some lipid-soluble substances such as organic solvents, such substances should be kept from direct contact with skin cells. The facts that cell membranes have a hydrophilic head and a hydrophobic tail and contain receptors for hormones and biologically active substances do not have a bearing on the nurse's teaching. While transmembrane proteins can indeed pass into the intracellular environment, the nurse is not referring to proteins in the teaching.
You might also like to view...
A hospital patient is immunocompromised because of stage 3 HIV infection and the physician has ordered a chest radiograph. How should the nurse most safely facilitate the test?
A) Arrange for a portable x-ray machine to be used. B) Have the patient wear a mask to the x-ray department. C) Ensure that the radiology department has been disinfected prior to the test. D) Send the patient to the x-ray department, and have the staff in the department wear masks.
Nausea/vomiting from which cause is helped best by antihistamines?
a. Allergies b. Opiate drugs c. Cancer chemotherapy d. Exposure to bad odors
The nurse working in the well-baby clinic prepares to administer immunizations to a four-month-old infant including:
a. DTaP #2, Hib #2, Varicella, PCV #2. b. Hep B #2, DTaP #2, IVP #1, PCV #1. c. Hep B #2, DTaP #1, IPV #2, MMR. d. DTaP #2, Hib #2, IPV #2, PCV #2.
A telltale sign of a chemically impaired nurse is
a. an increasing number of practice errors. b. an objective, assertive manner. c. willingness to admit to substance abuse. d. an effort to seek treatment.